Measuring My DIY Air Purifier
15 hours ago
- #Air Quality
- #Home Experiment
- #DIY Air Purifier
- The author conducted a DIY experiment to compare the performance of a Corsi-Rosenthal (CR) box air purifier against natural ventilation and a commercial Levoit 400s purifier.
- The key metric used was Clean Air Delivery Rate (CADR), measured in cubic meters of air per hour, focusing on PM2.5 pollutants.
- A controlled method to generate PM2.5 involved frying kale, achieving a stable concentration of 450 micrograms/m³ before testing ventilation or purifier effectiveness.
- Results showed the CR box outperformed natural ventilation significantly, with a calculated CADR of 550 m³/h, higher than the Levoit's claimed 400 m³/h.
- The experiment highlighted challenges in CADR measurement, including room air mixing, volume accuracy, and pollutant type variability.
- Future improvements suggested include using multiple PM2.5 sensors for better accuracy and testing with different pollutants or commercial purifiers.
- The author noted the CR box's effectiveness but acknowledged its noise and the convenience of quieter commercial purifiers.